Can null be assigned to or be compared to a value type variable?

问题

In Java, there have always existed primitive types and references, but not value types.

One of the goals of Project Valhalla is to explore and incubate feature candidates such as value types.

I would like to know if null can be assigned to a value type variable, or if a value type variable can be compared to null.

If not, I would also like to know why.

回答1:

From here: https://wiki.openjdk.java.net/display/valhalla/Minimal+Value+Types

Value types are "immutable, identity-agnostic, non-nullable, non-synchronizable, final"

So no, it can't be null

回答2:

Value type variable is value, null is absense of any value. So null and value types are incompatible by definition.

来源：https://stackoverflow.com/questions/48694891/can-null-be-assigned-to-or-be-compared-to-a-value-type-variable